1/* Definitions for Intel 386 running DragonFly with ELF format 2 Copyright (C) 2014-2020 Free Software Foundation, Inc. 3 Contributed by John Marino <gnugcc@marino.st> 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 3, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17Under Section 7 of GPL version 3, you are granted additional 18permissions described in the GCC Runtime Library Exception, version 193.1, as published by the Free Software Foundation. 20 21You should have received a copy of the GNU General Public License and 22a copy of the GCC Runtime Library Exception along with this program; 23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24<http://www.gnu.org/licenses/>. */ 25 26 27/* Override the default comment-starter of "/". */ 28#undef ASM_COMMENT_START 29#define ASM_COMMENT_START "#" 30 31#undef ASM_APP_ON 32#define ASM_APP_ON "#APP\n" 33 34#undef ASM_APP_OFF 35#define ASM_APP_OFF "#NO_APP\n" 36 37#undef DBX_REGISTER_NUMBER 38#define DBX_REGISTER_NUMBER(n) \ 39 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) 40 41#undef NO_PROFILE_COUNTERS 42#define NO_PROFILE_COUNTERS 1 43 44/* Tell final.c that we don't need a label passed to mcount. */ 45 46#undef MCOUNT_NAME 47#define MCOUNT_NAME ".mcount" 48 49/* Make gcc agree with <machine/ansi.h>. */ 50 51#undef SIZE_TYPE 52#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") 53 54#undef PTRDIFF_TYPE 55#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 56 57#undef WCHAR_TYPE_SIZE 58#define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD) 59 60#undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */ 61#define SUBTARGET_EXTRA_SPECS \ 62 { "dfbsd_dynamic_linker", DFBSD_DYNAMIC_LINKER } 63 64/* A C statement to output to the stdio stream FILE an assembler 65 command to advance the location counter to a multiple of 1<<LOG 66 bytes if it is within MAX_SKIP bytes. 67 68 This is used to align code labels according to Intel recommendations. */ 69 70#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 71#undef ASM_OUTPUT_MAX_SKIP_ALIGN 72#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ 73 if ((LOG) != 0) { \ 74 if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \ 75 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 76 else \ 77 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 78 } 79#endif 80 81/* Don't default to pcc-struct-return, we want to retain compatibility with 82 older gcc versions AND pcc-struct-return is nonreentrant. 83 (even though the SVR4 ABI for the i386 says that records and unions are 84 returned in memory). */ 85 86#undef DEFAULT_PCC_STRUCT_RETURN 87#define DEFAULT_PCC_STRUCT_RETURN 0 88 89/* DragonFly sets the rounding precision of the FPU to 53 bits. Let the 90 compiler get the contents of <float.h> and std::numeric_limits correct. */ 91#undef TARGET_96_ROUND_53_LONG_DOUBLE 92#define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT) 93 94/* Static stack checking is supported by means of probes. */ 95#define STACK_CHECK_STATIC_BUILTIN 1 96 97/* Support for i386 was removed from DragonFly in 2007 */ 98#define SUBTARGET32_DEFAULT_CPU "i486" 99 100#define TARGET_ASM_FILE_END file_end_indicate_exec_stack 101